MacRansom is being offered as a ransomware-as-a-service (RaaS) on dark web. It is not the first instance of RaaS, but it is, however, still troubling as it can shift the focus from Windows to the seemingly safe Mac devices. Researchers say that only 128 files can get encrypted and therefore the virus is not as harmful as others, albeit, it is still able to alter the Time Date Stamp, implying that no recovery tools will serve a useful purpose.
Source: https://www.hackread.com/most-sophisticated-mac-ransomware-sold-on-dark-web/